fix

modules/system/camera.nix

@@ -0,0 +1,35 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.system.camera;
+in
+{
+  options.my.system.camera = {
+    enable = lib.mkEnableOption "camera support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot.kernelModules = [ "uvcvideo" ];
+
+    environment.systemPackages = with pkgs; [
+      v4l-utils
+      ffmpeg-full
+    ];
+
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      pulse.enable = true;
+    };
+    security.rtkit.enable = true;
+
+    xdg.portal = {
+      enable = true;
+      extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+    };
+  };
+}